Accessories - Kenwood TS-820S Instruction Manual

6.2 ACCESSORIES
CAUTION: BE SURE THE TRANSCEIVER IS
UNPLUGGED AND TURNED OFF BEFORE REMOVING
THE CASE
INSTALLING THE CW FilTER (VG-88C)
(See Figure 251
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NOTE:
1) If you are not interested in FSK operation, plug in
the connector either to the "B" position or the "C"
position.
2) To facilitage the installation of filter and setting of
connector, remove the 3 screws holding the IF unit
fixture to the chassis and then pull the unit upward
Reconnect the 2P speaker connector in position, then
replace the bottom cover and the top cover The instal-
lation of the filter is now completed
INSTALLING THE DC-DC CONVERTER (DS-1A)
1 Remove the patch plate located on the rear panel of
TS-820S
2. Secure the DC-DC unit to the rear panel using the four
tapping screws supplied with the unit.
3 Select the correct color coded lead from the DC-DC unit
making sure that the color code corresponds to that of
the lead connected to the DC-DC terminal board adja-
cent to the power transformer
Solder the lead onto the terminal board.
Install the filter unit according to the following procedures:
1 Remove the top cover of the transceiver using a screw-
driver. Care should be useQ not to break the leads con-
nected between the 2 P connector and the speaker on
the cover. Next. remove the 2P connector
2. Turn the transceiver upside-down and remove the bot-
tom cover
3 Insert the filter in place at the IF unit circuit board on the
left wall of the transceiver Solder the 4 pins from the
rear side using a small size soldering iron. Soldering
should be finished as quick as possible.
4 Change the position of the connector (IF2) located at
the lower section of the IF unit depending on whether
the FSK shift width is 170 Hz or 850 Hz
Only SS B filter used... ,... A
SSB and CW filters used:
FSK shift 170 Hz (CW filter used) B
FSK shift 850 Hz (SSB filter used) C
Fig. 26 Installing the DC-DC Converter
Fig. 25 Installing the CW Filter
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